Calk for horseshoes



S. J. PORTER.

CALK FOR HORSESHOES.

ICATION FILED DE 22 19 APPL C. I9. 1,361,744, Patentpd Dec. 7, 1920.

PATENT OFFICE.

SAMUEL J. PORTER, OF ALEXANDRIA BAY, NEW YORK.

GAL! FOR HORSESHOES.

Specification of Letters Patent.

Patented Dec. '7, 1920.

Application filed December 22, 1919. Serial No. 346,492.

To all whom it may concern Be it known that I, SAMUEL J PORTER, a citizen of the United States, residing at Alexandria Bay in the county of Jefferson and State of l. ew York, have invented a new and useful Calk for Horseshoes, of which the following is a specification.

This invention relates to calks for horseshoes, and especially to a fastening for such calks. Y

The general object of this invention is to provide a calk which will prevent slipping of the animal.

A further object is to provide a calk which will fit very tightly and securely in holes in the horseshoe regardless of irregularities of manufacture, yet may be removed when worn out without damage to the shoe or to itself.

A further object is to provide a bushing for the neck of the calk, which bushing is to be of soft and annealed metal so as to insure a tight fit of the calk, and which will itself be held securely on the calk.

With these and other objects in mind, the invention consists in the improved construction described and claimed below, with the understanding, however, that changes and modifications within the scope of the appended claims maybe resorted to without departing from the spirit and scope of the invention.

In the drawing which accompanies and forms a part of this specification,

Figure l is a perspective view of the horseshoe with the improved calks in place;

Fig. 2 is a perspective view of the calk detached;

Fig. 3 is a longitudinal sectional view of the calk in position in the shoe; and

Fig. i is a longitudinal sectional view of a slightly modified form of the calk.

The numeral 5 indicates a horseshoe which has recesses or openings 6, preferably two at the toe portion and two more at the heel portion. These sockets, or openings, preferably extend through the material of the shoe and are given a slight taper. The calk 7 comprisesa head portion and a neck portion. The head portion includes a curved face having an upstanding rib 8 for strengthening purposes, and a flat face 9 opposite the curved'face. The arrangement is such that the head is given a sharply tapered. form in order to better grip the road.

The neck portion 10 is of cylindrical form with a slight taper and has a shoulder 11 separatlng it from the head portion. A collar or bushing 12 of some soft metal, such as well annealed copper, or perhaps of brass, and having a taper corresponding to that of the neck, is swaged upon the latter and abuts against the shoulder. The neck has one or more annular grooves 13, but one being shown. When the bushing is driven upon the neck, this groove aids materially in insuring a tight fit between the bushing and the neck, especially when such a metal as copper is used.

The modification of Fig. 4 differs from the form illustrated in the first three figures only by the shape of the head 14. The drawlng being clear in this respect, it is thought no further description is necessary. With the bushing in place upon the neck, the calk is driven into a recess or hole in the shoe. The soft copper is squeezed by this driving and, conforming to all the irregularities of the recess and of the neck, insures an absolutely tight fit. Were the bushing of the same material as that of the shoe or of the calk, such a secure fastening of the calk in the shoe would not be possible. The fitting of the various parts is such that when the calk is driven in, the groove 13 will lie well below the inner surface of the shoe. This will tend to force the bushing slightly into the groove, thereby insuring a tight fit.

The calks in the toe recesses are driven in so that their flat faces are presented on the forward or toe end of the shoe, while the calks in the heel recesses have their flat faces rearwardly. This arrangement helps to prevent slipping in both directions.

WVhat is claimed is: l

1. In a calk for horseshoes, a tapered neck, an annular groove on said neck, and a bushing swaged upon and about the neck and held thereon in part by its engagementwith said groove.

2. In a calk for horseshoes, a tapered neck, a shoulder at the base of the neck, an annular groove on said neck below the shoulder, and a tapered bushing fitted upon and about the neck and held thereon in part by its engagement with said groove, said bushing being of metal dissimilar from that of the calk or shoe and softer than either.

3. In a calk for horseshoes, a tapered neck, a shoulder at the base of said neck, an annular groove on the neck below the shoulder, and a bushing of soft metal inclosing the neck and held thereon, said groove being as my own, I have hereto aflixed my signa so disposed that When the calk is secured ture in the presence of two Witnesses. to the horseshoe the groove will lie 2 considerable distance from either side of the SAMUEL J. PORTER- 5 shoe with the bushing interposed between the shoe and the groove.

In testimony, that I claim the foregoing Withesses:

JOHN F. KELLETT, ALBERT R. DE YOUNG. 

